Full Disclosure mailing list archives
Re: security hole on local ISP
From: Lee <ler762 () gmail com>
Date: Tue, 29 Dec 2009 11:36:15 -0500
On Tue, Dec 29, 2009 at 10:23 AM, T Biehn <tbiehn () gmail com> wrote:
This is an orgiastic dump of information, you must really hate ETB; or you must be really excited for lulz.
or you're hoping that full disclosure will get ETB to fix the problem. Regard, Lee
-Travis On Tue, Dec 29, 2009 at 5:23 AM, Cilia Pretel Gallo <cpretelgallo () yahoo com> wrote:I've recently discovered a security hole on the modems (which double asrouters) used by a Colombian ISP - ETB.It so happens that all incoming connections to an IP address on said ISPon port 23 or port 80 land on the modem instead of the computer(s) connected to it. Even if one tries to redirect those ports to a local machine, the modem still gets all the connections on those ports.Also, connections on ports 23 and 80, from any IP address, will accessthe modem configuration options. Last year that could be done only from private IP addresses (i.e. 192.168.0/24), but now it can be done, as I said, from anywhere. I've been told that a few lucky users were able to forward port 80, but in that case, it's port 8080 that is intercepted by the modem.The end result is that anyone, from anywhere, can access the modem ofanyone on ETB to mess up their configuration (e.g. obtaining and changing the client's username and password, permanently disconnecting them from the internet, and so on) - that is, if they have the administration password. Unfortunately, ETB uses the same login/password on all of their modems since 2006, which are publicly available on the web.Login: Administrator Password: soporteETB2006 The whole IP range 190.24/14 corresponds to ETB clients. Any IP on thatrange where ports 80 and 23 are open is most likely a wide open ETB modem.Apparently, this issue has been repeatedly reported to ETB, but it alwaysfalls on deaf ears. They seem to think this is no big deal since nobody knows the username and password for the modems - which is not the case, and even if it were, they would be easily crackable by brute force.Peace, -Cilia____________________________________________________________________________________¡Obtén la mejor experiencia en la web! Descarga gratis el nuevo Internet Explorer 8. http://downloads.yahoo.com/ieak8/?l=e1 _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/-- FD1D E574 6CAB 2FAF 2921 F22E B8B7 9D0D 99FF A73C http://pgp.mit.edu:11371/pks/lookup?search=tbiehn&op=index&fingerprint=on http://pastebin.com/f6fd606da _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
Current thread:
- security hole on local ISP Cilia Pretel Gallo (Dec 29)
- Re: security hole on local ISP T Biehn (Dec 29)
- Re: security hole on local ISP Lee (Dec 29)
- Re: security hole on local ISP T Biehn (Dec 29)
- Re: security hole on local ISP McGhee, Eddie (Dec 29)
- Re: security hole on local ISP Lee (Dec 29)
- Re: security hole on local ISP Lee (Dec 29)
- Re: security hole on local ISP T Biehn (Dec 29)
- Re: security hole on local ISP Valdis . Kletnieks (Dec 29)
- <Possible follow-ups>
- Re: security hole on local ISP Cilia Pretel Gallo (Dec 30)